Unofficial File parts/24121.dat
part image
File Header:
0 Technic Gear Ring Quarter 11 x 11 with 35 Teeth
0 Name: 24121.dat
0 Author: Philippe Hurbain [Philo]
0 !LDRAW_ORG Unofficial_Part
0 !LICENSE Redistributable under CCAL version 2.0 : see CAreadme.txt

0 BFC CERTIFY CCW

Status:
1 subfile isn't certified. (CSN)
Size: 62359 bytes
Reviewers' certifications:
MagFors=certify
Required (unofficial) subfiles:
Related (unofficial) subfiles:
(none)
File reviews and updates:
At Mon Aug 1 20:00:01 2016, the file was initially submitted.
Submitted by: Philo
At Fri Aug 5 21:50:00 2016, the following review was posted:

Reviewer: mkennedy
Certification: novote
Comments:
May benefit by using more subparts.

At Mon Aug 8 17:00:00 2016, the following review was posted:

Reviewer: MagFors
Certification: hold
Comments:
Missing an edge here:
2 4 -161.273 0 128.91 -161.273 -10 128.91

Yes, it could become two mirrored halves, keeping the slotted axlehole in the mainpart.

At Mon Aug 8 19:05:00 2016, a new version of the file was submitted.
Submitted by: Philo
Comments:
Well spotted. I decided that part was not big enough to justify the fuss of slitting it.

Existing certification-votes were deleted.
At Sat Sep 3 15:15:00 2016, the following review was posted:

Reviewer: MagFors
Certification: certify
Comments:
This was a hard one to review. Great fun.

As far as I can understand, all the holes are correctly placed.
I've recreated many of the set-ups in this article:
http://brickset.com/article/23288/the-geometry-of-the-new-11x11-circle-gear-rack
using LDCad, learning about weird angles in LDCad in the process.

Here is more info about the geometry in this part
https://www.flickr.com/photos/50191917@N06/24571032152/

At Sat Sep 3 17:55:00 2016, the following review was posted:

Reviewer: Philo
Certification: novote
Comments:
Yes, I had a fun time too finding how the holes were placed (the brickset article was not published when I started). One set of holes are spaced 15 degrees apart, the other set of pinholes form 6/8/10 pythagorean triangles with center of ring and axle holes)

At Sat Sep 3 18:10:00 2016, the following review was posted:

Reviewer: Philo
Certification: novote
Comments:
I should have had a look at the flickr image before answering an repeating the same thing...

At Wed Sep 28 19:40:00 2016, the following review was posted:

Reviewer: MMR1988
Certification: novote
Comments:
What's the purpose of this triangle:
3 16 -146.358 10 131.384 -147.159 -10 125.805 -145.193 -10 128.071 ?

At Mon Sep 3 09:25:01 2018, a new version of the file was submitted.
Submitted by: Philo
Comments:
Removed extraneous triangle.

Existing certification-votes were deleted.
At Mon Sep 3 21:35:01 2018, the following review was posted:

Reviewer: MagFors
Certification: novote
Comments:

Flat cond-line?
Line 946: Optional Line like Line found (950) 5 24 -161.273 -10 128.91 -161.273 0 128.91 -157.341 0 133.442 -157.766 -10 128.719
At Tue Sep 4 05:25:02 2018, a new version of the file was submitted.
Submitted by: Philo
Comments:
Overlapped with an edge line... Removed.

Existing certification-votes were deleted.
At Wed Sep 5 01:55:01 2018, the following review was posted:

Reviewer: mkennedy
Certification: novote
Comments:
Might you be able to use more 48 primitives (Not a full 4/48 though)?

At Wed Sep 5 19:10:02 2018, the following review was posted:

Reviewer: mkennedy
Certification: novote
Comments:
Oops, I meant 12/48 would be too big. 10/48 may be the right size though.

At Thu Sep 6 11:15:01 2018, the following review was posted:

Reviewer: SLS
Certification: novote
Comments:
Hi, while you're modifying the part, it appears it is incorrect: http://forum.bricklink.com/viewtopic.php?f=6&t=1311&view=unread&sid=b1484774564d68950cc184e85ab27542 (needs login).
I checked the ones I have and it's true (and logical), the "wall" between the rack and the beam is centered.

At Thu Sep 6 14:35:01 2018, the following review was posted:

Reviewer: Philo
Certification: hold
Comments:
Indeed :(

At Fri Sep 7 08:10:01 2018, a new version of the file was submitted.
Submitted by: Philo
Comments:
Corrected wrong geometry mentionned by Sylvain.
@Mark: I considered using 48 elements, but it doesn't work well with the position of pegholes (they are close to multiples of 7.5 degrees angles, but not exactly).

Existing certification-votes were deleted.
At Mon Sep 10 21:05:01 2018, the following review was posted:

Reviewer: MagFors
Certification: certify
Comments:
Good catch. I missed that.